However, security software is not like vintage wine—it does not improve with age. While fondly remembered, the 2017 version is now a serious liability. Today’s users should download the (or switch to Windows Defender, which has caught up significantly) rather than risk their system by resurrecting a legacy installer from the WannaCry era.
An Analysis of Avast Free Antivirus (2017 Version): Features, Performance, and Market Impact avast antivirus free download 2017